wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A ball moves horizontally in a closed box making several collisions with the walls. The box is kept on a smooth horizontal surface. During the motion of the ball, the velocity of the center of mass :

A
of the box remains constant.
No worries! Weā€˜ve got your back. Try BYJUā€˜S free classes today!
B
of the box plus the ball system remains constant.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
of the ball remains constant.
No worries! Weā€˜ve got your back. Try BYJUā€˜S free classes today!
D
of the ball relative to the box remains constant.
No worries! Weā€˜ve got your back. Try BYJUā€˜S free classes today!
Open in App
Solution

The correct option is B of the box plus the ball system remains constant.
Consider your system as the box + ball.
All forces acting on the system are internal (equal and opposite)
i.e. net force acting on the system is zero.
i.e. the velocity of center of mass remains constant.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Basics
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon